Figure 4From: Basic surface-active properties in the homologous series of β-alkyl (C12H25/C18H37) polyethyleneoxy (n = 0-20) propionamidesFunctional structure of β-alkyl (R = C 12 H 25 to C 18 H 37 ) polyethyleneoxy (n = 3-20) propionamides [R(EO) n PD] [[31]].Back to article page